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(11)

EP 4 473 728 A1

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(43) Date of publication: 11.12.2024 Bulletin 2024/50 (21) Application number: 22924542.8 (22) Date of filing: 02.11.2022

(51) International Patent Classification (IPC):  H04N 19/105(2014.01) H04N 19/593(2014.01) H04N 19/117(2014.01) H04N 19/44(2014.01) H04N 19/186(2014.01) H04N 19/11(2014.01) H04N 19/157(2014.01) (52) Cooperative Patent Classification (CPC): H04N 19/186; H04N 19/105; H04N 19/11; H04N 19/70 (86) International application number: PCT/US2022/079158 (87) International publication number: WO 2023/146689 (03.08.2023 Gazette 2023/31)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 31.01.2022 US 202263305159 P 28.10.2022 US 202217976556 (71) Applicant: Tencent America LLC Palo Alto, CA 94306 (US)	(72) Inventors: XU, Xiaozhong Palo Alto, California 94306 (US) LIU, Shan Palo Alto, California 94306 (US) (74) Representative: Gunzelmann, Rainer  Wuesthoff & Wuesthoff Patentanwälte und Rechtsanwalt PartG mbB Schweigerstraße 2 81541 München 81541 München (DE)